./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/13-privatized_24-multiple-protecting_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i ./goblint.2024-05-07_14-17-48.files/protection/13-privatized_24-multiple-protecting_true.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 12:52:25,665 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 12:52:25,729 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 12:52:25,732 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 12:52:25,733 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 12:52:25,756 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 12:52:25,757 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 12:52:25,757 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 12:52:25,757 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 12:52:25,760 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 12:52:25,761 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 12:52:25,761 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 12:52:25,761 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 12:52:25,762 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 12:52:25,762 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 12:52:25,763 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 12:52:25,763 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 12:52:25,763 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 12:52:25,763 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 12:52:25,768 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 12:52:25,768 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 12:52:25,768 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 12:52:25,769 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 12:52:25,769 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 12:52:25,769 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 12:52:25,769 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 12:52:25,769 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 12:52:25,770 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 12:52:25,770 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 12:52:25,770 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 12:52:25,771 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 12:52:25,771 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 12:52:25,771 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:52:25,772 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 12:52:25,772 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 12:52:25,772 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 12:52:25,772 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 12:52:25,772 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 12:52:25,773 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 12:52:25,773 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 12:52:25,773 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 12:52:25,773 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 12:52:25,773 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 12:52:25,773 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 12:52:26,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 12:52:26,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 12:52:26,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 12:52:26,032 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 12:52:26,033 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 12:52:26,034 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/13-privatized_24-multiple-protecting_true.yml/witness.yml [2024-05-12 12:52:26,153 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 12:52:26,154 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 12:52:26,154 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i [2024-05-12 12:52:27,133 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 12:52:27,332 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 12:52:27,333 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i [2024-05-12 12:52:27,353 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7eca1ae5a/ed296cd59eda4fefbf2652eb4082f70a/FLAG68d4989b3 [2024-05-12 12:52:27,365 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7eca1ae5a/ed296cd59eda4fefbf2652eb4082f70a [2024-05-12 12:52:27,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 12:52:27,367 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 12:52:27,369 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 12:52:27,369 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 12:52:27,373 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 12:52:27,373 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:52:26" (1/2) ... [2024-05-12 12:52:27,374 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15bd30b6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:52:27, skipping insertion in model container [2024-05-12 12:52:27,374 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:52:26" (1/2) ... [2024-05-12 12:52:27,375 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@68dc2a6f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:52:27, skipping insertion in model container [2024-05-12 12:52:27,375 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:52:27" (2/2) ... [2024-05-12 12:52:27,376 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15bd30b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:27, skipping insertion in model container [2024-05-12 12:52:27,376 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:52:27" (2/2) ... [2024-05-12 12:52:27,376 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 12:52:27,416 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 12:52:27,417 INFO L97 edCorrectnessWitness]: Location invariant before [L707-L707] (! multithreaded || 0 <= g2) && (! multithreaded || 0 <= g1) [2024-05-12 12:52:27,417 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 12:52:27,417 INFO L103 edCorrectnessWitness]: ghost_variable __global_lock_locked = 0 [2024-05-12 12:52:27,417 INFO L103 edCorrectnessWitness]: ghost_variable mutex2_locked = 0 [2024-05-12 12:52:27,417 INFO L103 edCorrectnessWitness]: ghost_variable mutex1_locked = 0 [2024-05-12 12:52:27,418 INFO L106 edCorrectnessWitness]: ghost_update [L701-L701] mutex2_locked = 0; [2024-05-12 12:52:27,418 INFO L106 edCorrectnessWitness]: ghost_update [L694-L694] mutex2_locked = 1; [2024-05-12 12:52:27,418 INFO L106 edCorrectnessWitness]: ghost_update [L712-L712] __global_lock_locked = 1; [2024-05-12 12:52:27,418 INFO L106 edCorrectnessWitness]: ghost_update [L719-L719] __global_lock_locked = 1; [2024-05-12 12:52:27,418 INFO L106 edCorrectnessWitness]: ghost_update [L695-L695] __global_lock_locked = 1; [2024-05-12 12:52:27,418 INFO L106 edCorrectnessWitness]: ghost_update [L700-L700] __global_lock_locked = 0; [2024-05-12 12:52:27,418 INFO L106 edCorrectnessWitness]: ghost_update [L697-L697] __global_lock_locked = 0; [2024-05-12 12:52:27,419 INFO L106 edCorrectnessWitness]: ghost_update [L689-L689] __global_lock_locked = 0; [2024-05-12 12:52:27,419 INFO L106 edCorrectnessWitness]: ghost_update [L717-L717] __global_lock_locked = 0; [2024-05-12 12:52:27,419 INFO L106 edCorrectnessWitness]: ghost_update [L706-L706] multithreaded = 1; [2024-05-12 12:52:27,419 INFO L106 edCorrectnessWitness]: ghost_update [L686-L686] mutex1_locked = 1; [2024-05-12 12:52:27,419 INFO L106 edCorrectnessWitness]: ghost_update [L708-L708] __global_lock_locked = 1; [2024-05-12 12:52:27,419 INFO L106 edCorrectnessWitness]: ghost_update [L687-L687] __global_lock_locked = 1; [2024-05-12 12:52:27,419 INFO L106 edCorrectnessWitness]: ghost_update [L721-L721] __global_lock_locked = 0; [2024-05-12 12:52:27,420 INFO L106 edCorrectnessWitness]: ghost_update [L718-L718] mutex2_locked = 0; [2024-05-12 12:52:27,420 INFO L106 edCorrectnessWitness]: ghost_update [L715-L715] __global_lock_locked = 1; [2024-05-12 12:52:27,420 INFO L106 edCorrectnessWitness]: ghost_update [L693-L693] mutex1_locked = 0; [2024-05-12 12:52:27,420 INFO L106 edCorrectnessWitness]: ghost_update [L698-L698] __global_lock_locked = 1; [2024-05-12 12:52:27,421 INFO L106 edCorrectnessWitness]: ghost_update [L707-L707] mutex1_locked = 1; [2024-05-12 12:52:27,421 INFO L106 edCorrectnessWitness]: ghost_update [L714-L714] __global_lock_locked = 0; [2024-05-12 12:52:27,421 INFO L106 edCorrectnessWitness]: ghost_update [L710-L710] __global_lock_locked = 0; [2024-05-12 12:52:27,421 INFO L106 edCorrectnessWitness]: ghost_update [L722-L722] mutex1_locked = 0; [2024-05-12 12:52:27,421 INFO L106 edCorrectnessWitness]: ghost_update [L690-L690] __global_lock_locked = 1; [2024-05-12 12:52:27,421 INFO L106 edCorrectnessWitness]: ghost_update [L692-L692] __global_lock_locked = 0; [2024-05-12 12:52:27,421 INFO L106 edCorrectnessWitness]: ghost_update [L711-L711] mutex2_locked = 1; [2024-05-12 12:52:27,457 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 12:52:27,624 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i[1096,1109] [2024-05-12 12:52:27,719 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:52:27,736 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 12:52:27,769 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i[1096,1109] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 12:52:27,831 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:52:27,866 INFO L206 MainTranslator]: Completed translation [2024-05-12 12:52:27,866 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:27 WrapperNode [2024-05-12 12:52:27,866 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 12:52:27,867 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 12:52:27,867 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 12:52:27,867 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 12:52:27,872 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:27" (1/1) ... [2024-05-12 12:52:27,881 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:27" (1/1) ... [2024-05-12 12:52:27,897 INFO L138 Inliner]: procedures = 163, calls = 58, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 126 [2024-05-12 12:52:27,899 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 12:52:27,899 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 12:52:27,899 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 12:52:27,900 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 12:52:27,908 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:27" (1/1) ... [2024-05-12 12:52:27,908 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:27" (1/1) ... [2024-05-12 12:52:27,911 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:27" (1/1) ... [2024-05-12 12:52:27,921 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 5, 5, 5, 2]. 26 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 0, 1]. [2024-05-12 12:52:27,921 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:27" (1/1) ... [2024-05-12 12:52:27,921 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:27" (1/1) ... [2024-05-12 12:52:27,928 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:27" (1/1) ... [2024-05-12 12:52:27,929 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:27" (1/1) ... [2024-05-12 12:52:27,931 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:27" (1/1) ... [2024-05-12 12:52:27,932 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:27" (1/1) ... [2024-05-12 12:52:27,934 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 12:52:27,935 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 12:52:27,935 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 12:52:27,935 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 12:52:27,936 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:27" (1/1) ... [2024-05-12 12:52:27,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:52:27,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:52:27,957 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-05-12 12:52:27,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-05-12 12:52:27,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-05-12 12:52:27,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-05-12 12:52:27,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-05-12 12:52:27,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-05-12 12:52:27,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-05-12 12:52:27,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 12:52:27,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 12:52:27,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 12:52:27,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 12:52:27,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-05-12 12:52:27,994 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-05-12 12:52:27,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 12:52:27,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 12:52:27,995 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-05-12 12:52:27,995 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-05-12 12:52:27,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 12:52:27,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 12:52:27,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 12:52:27,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 12:52:27,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 12:52:27,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-05-12 12:52:27,995 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-05-12 12:52:27,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 12:52:27,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 12:52:27,996 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 12:52:28,103 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 12:52:28,105 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 12:52:28,321 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 12:52:28,321 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 12:52:28,460 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 12:52:28,460 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 12:52:28,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:52:28 BoogieIcfgContainer [2024-05-12 12:52:28,461 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 12:52:28,463 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 12:52:28,463 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 12:52:28,465 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 12:52:28,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:52:26" (1/4) ... [2024-05-12 12:52:28,466 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b707917 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 12:52:28, skipping insertion in model container [2024-05-12 12:52:28,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 12:52:27" (2/4) ... [2024-05-12 12:52:28,467 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b707917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 12:52:28, skipping insertion in model container [2024-05-12 12:52:28,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:27" (3/4) ... [2024-05-12 12:52:28,468 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b707917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 12:52:28, skipping insertion in model container [2024-05-12 12:52:28,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:52:28" (4/4) ... [2024-05-12 12:52:28,469 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_24-multiple-protecting_true.i [2024-05-12 12:52:28,481 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 12:52:28,482 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-05-12 12:52:28,482 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 12:52:28,517 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-05-12 12:52:28,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 79 transitions, 165 flow [2024-05-12 12:52:28,588 INFO L124 PetriNetUnfolderBase]: 4/78 cut-off events. [2024-05-12 12:52:28,589 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-05-12 12:52:28,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 78 events. 4/78 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 82 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2024-05-12 12:52:28,593 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 79 transitions, 165 flow [2024-05-12 12:52:28,596 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 69 transitions, 141 flow [2024-05-12 12:52:28,603 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 12:52:28,609 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@e16eda, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 12:52:28,609 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-05-12 12:52:28,612 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 12:52:28,613 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 12:52:28,644 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 12:52:28,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:28,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 12:52:28,646 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-05-12 12:52:28,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:28,654 INFO L85 PathProgramCache]: Analyzing trace with hash -320870443, now seen corresponding path program 1 times [2024-05-12 12:52:28,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:28,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973192880] [2024-05-12 12:52:28,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:28,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:28,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:28,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:28,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:28,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973192880] [2024-05-12 12:52:28,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973192880] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:28,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:28,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 12:52:28,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154169006] [2024-05-12 12:52:28,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:28,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 12:52:28,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:28,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 12:52:28,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 12:52:28,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 79 [2024-05-12 12:52:28,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 141 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:28,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:28,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 79 [2024-05-12 12:52:28,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:29,187 INFO L124 PetriNetUnfolderBase]: 320/855 cut-off events. [2024-05-12 12:52:29,187 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 12:52:29,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1540 conditions, 855 events. 320/855 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4625 event pairs, 50 based on Foata normal form. 57/901 useless extension candidates. Maximal degree in co-relation 1527. Up to 585 conditions per place. [2024-05-12 12:52:29,197 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 56 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2024-05-12 12:52:29,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 84 transitions, 287 flow [2024-05-12 12:52:29,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:52:29,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:52:29,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2024-05-12 12:52:29,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6413502109704642 [2024-05-12 12:52:29,210 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 141 flow. Second operand 3 states and 152 transitions. [2024-05-12 12:52:29,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 84 transitions, 287 flow [2024-05-12 12:52:29,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 84 transitions, 286 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 12:52:29,219 INFO L231 Difference]: Finished difference. Result has 72 places, 66 transitions, 142 flow [2024-05-12 12:52:29,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=72, PETRI_TRANSITIONS=66} [2024-05-12 12:52:29,224 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 2 predicate places. [2024-05-12 12:52:29,225 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 66 transitions, 142 flow [2024-05-12 12:52:29,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:29,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:29,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:52:29,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 12:52:29,226 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-05-12 12:52:29,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:29,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1481696263, now seen corresponding path program 1 times [2024-05-12 12:52:29,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:29,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675390146] [2024-05-12 12:52:29,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:29,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:29,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:29,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:29,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:29,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675390146] [2024-05-12 12:52:29,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675390146] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:29,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:29,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 12:52:29,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533959796] [2024-05-12 12:52:29,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:29,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:52:29,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:29,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:52:29,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:52:29,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 79 [2024-05-12 12:52:29,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 66 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:29,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:29,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 79 [2024-05-12 12:52:29,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:29,524 INFO L124 PetriNetUnfolderBase]: 317/846 cut-off events. [2024-05-12 12:52:29,524 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-05-12 12:52:29,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1577 conditions, 846 events. 317/846 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4577 event pairs, 47 based on Foata normal form. 3/836 useless extension candidates. Maximal degree in co-relation 1562. Up to 468 conditions per place. [2024-05-12 12:52:29,527 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 73 selfloop transitions, 3 changer transitions 0/102 dead transitions. [2024-05-12 12:52:29,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 102 transitions, 366 flow [2024-05-12 12:52:29,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 12:52:29,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 12:52:29,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 193 transitions. [2024-05-12 12:52:29,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6107594936708861 [2024-05-12 12:52:29,533 INFO L175 Difference]: Start difference. First operand has 72 places, 66 transitions, 142 flow. Second operand 4 states and 193 transitions. [2024-05-12 12:52:29,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 102 transitions, 366 flow [2024-05-12 12:52:29,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 102 transitions, 362 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 12:52:29,536 INFO L231 Difference]: Finished difference. Result has 74 places, 66 transitions, 148 flow [2024-05-12 12:52:29,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=74, PETRI_TRANSITIONS=66} [2024-05-12 12:52:29,536 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 4 predicate places. [2024-05-12 12:52:29,536 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 66 transitions, 148 flow [2024-05-12 12:52:29,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:29,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:29,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:52:29,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 12:52:29,537 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-05-12 12:52:29,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:29,538 INFO L85 PathProgramCache]: Analyzing trace with hash -195766242, now seen corresponding path program 1 times [2024-05-12 12:52:29,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:29,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112827646] [2024-05-12 12:52:29,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:29,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:29,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:29,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:29,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112827646] [2024-05-12 12:52:29,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112827646] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:29,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:29,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:52:29,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30819964] [2024-05-12 12:52:29,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:29,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:52:29,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:29,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:52:29,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:52:29,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 79 [2024-05-12 12:52:29,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 66 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:29,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:29,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 79 [2024-05-12 12:52:29,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:29,807 INFO L124 PetriNetUnfolderBase]: 443/1137 cut-off events. [2024-05-12 12:52:29,807 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-05-12 12:52:29,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2201 conditions, 1137 events. 443/1137 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 6322 event pairs, 116 based on Foata normal form. 18/1102 useless extension candidates. Maximal degree in co-relation 2185. Up to 670 conditions per place. [2024-05-12 12:52:29,812 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 71 selfloop transitions, 15 changer transitions 1/107 dead transitions. [2024-05-12 12:52:29,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 107 transitions, 411 flow [2024-05-12 12:52:29,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:52:29,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:52:29,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 203 transitions. [2024-05-12 12:52:29,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5139240506329114 [2024-05-12 12:52:29,814 INFO L175 Difference]: Start difference. First operand has 74 places, 66 transitions, 148 flow. Second operand 5 states and 203 transitions. [2024-05-12 12:52:29,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 107 transitions, 411 flow [2024-05-12 12:52:29,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 107 transitions, 401 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-05-12 12:52:29,817 INFO L231 Difference]: Finished difference. Result has 79 places, 75 transitions, 244 flow [2024-05-12 12:52:29,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=244, PETRI_PLACES=79, PETRI_TRANSITIONS=75} [2024-05-12 12:52:29,817 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 9 predicate places. [2024-05-12 12:52:29,818 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 75 transitions, 244 flow [2024-05-12 12:52:29,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:29,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:29,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:52:29,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 12:52:29,818 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-05-12 12:52:29,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:29,819 INFO L85 PathProgramCache]: Analyzing trace with hash -958636169, now seen corresponding path program 1 times [2024-05-12 12:52:29,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:29,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882183229] [2024-05-12 12:52:29,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:29,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:29,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:29,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:29,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:29,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882183229] [2024-05-12 12:52:29,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882183229] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:29,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:29,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:52:29,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131695302] [2024-05-12 12:52:29,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:29,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:52:29,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:29,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:52:29,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:52:29,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 79 [2024-05-12 12:52:29,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 75 transitions, 244 flow. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:29,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:29,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 79 [2024-05-12 12:52:29,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:30,069 INFO L124 PetriNetUnfolderBase]: 338/904 cut-off events. [2024-05-12 12:52:30,070 INFO L125 PetriNetUnfolderBase]: For 434/465 co-relation queries the response was YES. [2024-05-12 12:52:30,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1994 conditions, 904 events. 338/904 cut-off events. For 434/465 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4989 event pairs, 46 based on Foata normal form. 7/908 useless extension candidates. Maximal degree in co-relation 1974. Up to 301 conditions per place. [2024-05-12 12:52:30,075 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 89 selfloop transitions, 5 changer transitions 0/123 dead transitions. [2024-05-12 12:52:30,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 123 transitions, 564 flow [2024-05-12 12:52:30,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:52:30,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:52:30,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 239 transitions. [2024-05-12 12:52:30,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6050632911392405 [2024-05-12 12:52:30,076 INFO L175 Difference]: Start difference. First operand has 79 places, 75 transitions, 244 flow. Second operand 5 states and 239 transitions. [2024-05-12 12:52:30,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 123 transitions, 564 flow [2024-05-12 12:52:30,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 123 transitions, 560 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-05-12 12:52:30,080 INFO L231 Difference]: Finished difference. Result has 84 places, 75 transitions, 254 flow [2024-05-12 12:52:30,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=254, PETRI_PLACES=84, PETRI_TRANSITIONS=75} [2024-05-12 12:52:30,081 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 14 predicate places. [2024-05-12 12:52:30,081 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 75 transitions, 254 flow [2024-05-12 12:52:30,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:30,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:30,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:52:30,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 12:52:30,082 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-05-12 12:52:30,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:30,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1240373010, now seen corresponding path program 1 times [2024-05-12 12:52:30,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:30,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739094719] [2024-05-12 12:52:30,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:30,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:30,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:30,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:30,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739094719] [2024-05-12 12:52:30,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739094719] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:30,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:30,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:52:30,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647462227] [2024-05-12 12:52:30,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:30,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 12:52:30,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:30,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 12:52:30,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-05-12 12:52:30,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 79 [2024-05-12 12:52:30,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 254 flow. Second operand has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:30,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:30,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 79 [2024-05-12 12:52:30,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:30,366 INFO L124 PetriNetUnfolderBase]: 198/667 cut-off events. [2024-05-12 12:52:30,366 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2024-05-12 12:52:30,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1444 conditions, 667 events. 198/667 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3544 event pairs, 24 based on Foata normal form. 21/686 useless extension candidates. Maximal degree in co-relation 1421. Up to 317 conditions per place. [2024-05-12 12:52:30,369 INFO L140 encePairwiseOnDemand]: 72/79 looper letters, 63 selfloop transitions, 7 changer transitions 0/100 dead transitions. [2024-05-12 12:52:30,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 100 transitions, 457 flow [2024-05-12 12:52:30,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:52:30,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:52:30,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 217 transitions. [2024-05-12 12:52:30,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.549367088607595 [2024-05-12 12:52:30,371 INFO L175 Difference]: Start difference. First operand has 84 places, 75 transitions, 254 flow. Second operand 5 states and 217 transitions. [2024-05-12 12:52:30,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 100 transitions, 457 flow [2024-05-12 12:52:30,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 100 transitions, 434 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-05-12 12:52:30,374 INFO L231 Difference]: Finished difference. Result has 84 places, 76 transitions, 253 flow [2024-05-12 12:52:30,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=253, PETRI_PLACES=84, PETRI_TRANSITIONS=76} [2024-05-12 12:52:30,375 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 14 predicate places. [2024-05-12 12:52:30,375 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 76 transitions, 253 flow [2024-05-12 12:52:30,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:30,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:30,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:52:30,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 12:52:30,376 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-05-12 12:52:30,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:30,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1029718873, now seen corresponding path program 1 times [2024-05-12 12:52:30,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:30,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917428393] [2024-05-12 12:52:30,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:30,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:30,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:30,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:30,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917428393] [2024-05-12 12:52:30,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917428393] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:30,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:30,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 12:52:30,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470977538] [2024-05-12 12:52:30,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:30,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 12:52:30,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:30,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 12:52:30,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 12:52:30,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 79 [2024-05-12 12:52:30,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 76 transitions, 253 flow. Second operand has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 6 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:30,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:30,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 79 [2024-05-12 12:52:30,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:30,604 INFO L124 PetriNetUnfolderBase]: 201/627 cut-off events. [2024-05-12 12:52:30,605 INFO L125 PetriNetUnfolderBase]: For 221/221 co-relation queries the response was YES. [2024-05-12 12:52:30,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1380 conditions, 627 events. 201/627 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3181 event pairs, 51 based on Foata normal form. 3/628 useless extension candidates. Maximal degree in co-relation 1356. Up to 198 conditions per place. [2024-05-12 12:52:30,607 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 93 selfloop transitions, 5 changer transitions 0/127 dead transitions. [2024-05-12 12:52:30,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 127 transitions, 601 flow [2024-05-12 12:52:30,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:52:30,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:52:30,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 271 transitions. [2024-05-12 12:52:30,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5717299578059072 [2024-05-12 12:52:30,609 INFO L175 Difference]: Start difference. First operand has 84 places, 76 transitions, 253 flow. Second operand 6 states and 271 transitions. [2024-05-12 12:52:30,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 127 transitions, 601 flow [2024-05-12 12:52:30,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 127 transitions, 598 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 12:52:30,612 INFO L231 Difference]: Finished difference. Result has 88 places, 76 transitions, 264 flow [2024-05-12 12:52:30,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=264, PETRI_PLACES=88, PETRI_TRANSITIONS=76} [2024-05-12 12:52:30,612 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 18 predicate places. [2024-05-12 12:52:30,613 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 76 transitions, 264 flow [2024-05-12 12:52:30,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 6 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:30,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:30,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:52:30,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 12:52:30,614 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-05-12 12:52:30,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:30,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1654568036, now seen corresponding path program 1 times [2024-05-12 12:52:30,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:30,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216076063] [2024-05-12 12:52:30,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:30,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:30,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:30,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:30,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216076063] [2024-05-12 12:52:30,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216076063] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:30,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:30,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 12:52:30,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856398787] [2024-05-12 12:52:30,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:30,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:52:30,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:30,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:52:30,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:52:30,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 79 [2024-05-12 12:52:30,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 76 transitions, 264 flow. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:30,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:30,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 79 [2024-05-12 12:52:30,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:30,824 INFO L124 PetriNetUnfolderBase]: 251/716 cut-off events. [2024-05-12 12:52:30,824 INFO L125 PetriNetUnfolderBase]: For 236/236 co-relation queries the response was YES. [2024-05-12 12:52:30,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1724 conditions, 716 events. 251/716 cut-off events. For 236/236 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3611 event pairs, 160 based on Foata normal form. 36/751 useless extension candidates. Maximal degree in co-relation 1699. Up to 436 conditions per place. [2024-05-12 12:52:30,827 INFO L140 encePairwiseOnDemand]: 66/79 looper letters, 50 selfloop transitions, 13 changer transitions 7/88 dead transitions. [2024-05-12 12:52:30,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 88 transitions, 441 flow [2024-05-12 12:52:30,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:52:30,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:52:30,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 172 transitions. [2024-05-12 12:52:30,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43544303797468353 [2024-05-12 12:52:30,828 INFO L175 Difference]: Start difference. First operand has 88 places, 76 transitions, 264 flow. Second operand 5 states and 172 transitions. [2024-05-12 12:52:30,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 88 transitions, 441 flow [2024-05-12 12:52:30,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 88 transitions, 421 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-05-12 12:52:30,831 INFO L231 Difference]: Finished difference. Result has 84 places, 69 transitions, 275 flow [2024-05-12 12:52:30,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=275, PETRI_PLACES=84, PETRI_TRANSITIONS=69} [2024-05-12 12:52:30,831 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 14 predicate places. [2024-05-12 12:52:30,831 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 69 transitions, 275 flow [2024-05-12 12:52:30,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:30,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:30,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:52:30,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 12:52:30,832 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-05-12 12:52:30,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:30,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1712441467, now seen corresponding path program 1 times [2024-05-12 12:52:30,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:30,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020628378] [2024-05-12 12:52:30,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:30,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:30,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:30,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:30,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020628378] [2024-05-12 12:52:30,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020628378] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:30,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:30,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:52:30,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658177187] [2024-05-12 12:52:30,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:30,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:52:30,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:30,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:52:30,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:52:30,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 79 [2024-05-12 12:52:30,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 69 transitions, 275 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:30,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:30,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 79 [2024-05-12 12:52:30,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:31,014 INFO L124 PetriNetUnfolderBase]: 194/605 cut-off events. [2024-05-12 12:52:31,015 INFO L125 PetriNetUnfolderBase]: For 331/331 co-relation queries the response was YES. [2024-05-12 12:52:31,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1504 conditions, 605 events. 194/605 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2921 event pairs, 76 based on Foata normal form. 11/615 useless extension candidates. Maximal degree in co-relation 1478. Up to 281 conditions per place. [2024-05-12 12:52:31,017 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 59 selfloop transitions, 17 changer transitions 1/95 dead transitions. [2024-05-12 12:52:31,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 95 transitions, 524 flow [2024-05-12 12:52:31,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:52:31,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:52:31,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 182 transitions. [2024-05-12 12:52:31,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4607594936708861 [2024-05-12 12:52:31,019 INFO L175 Difference]: Start difference. First operand has 84 places, 69 transitions, 275 flow. Second operand 5 states and 182 transitions. [2024-05-12 12:52:31,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 95 transitions, 524 flow [2024-05-12 12:52:31,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 95 transitions, 470 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-05-12 12:52:31,021 INFO L231 Difference]: Finished difference. Result has 86 places, 75 transitions, 331 flow [2024-05-12 12:52:31,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=331, PETRI_PLACES=86, PETRI_TRANSITIONS=75} [2024-05-12 12:52:31,022 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 16 predicate places. [2024-05-12 12:52:31,022 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 75 transitions, 331 flow [2024-05-12 12:52:31,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:31,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:31,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:52:31,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 12:52:31,023 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-05-12 12:52:31,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:31,023 INFO L85 PathProgramCache]: Analyzing trace with hash -895088143, now seen corresponding path program 1 times [2024-05-12 12:52:31,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:31,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551101649] [2024-05-12 12:52:31,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:31,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:31,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:31,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:31,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551101649] [2024-05-12 12:52:31,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551101649] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:31,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:31,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:52:31,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605521137] [2024-05-12 12:52:31,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:31,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 12:52:31,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:31,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 12:52:31,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-05-12 12:52:31,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 79 [2024-05-12 12:52:31,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 75 transitions, 331 flow. Second operand has 7 states, 7 states have (on average 31.857142857142858) internal successors, (223), 7 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:31,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:31,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 79 [2024-05-12 12:52:31,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:31,261 INFO L124 PetriNetUnfolderBase]: 155/527 cut-off events. [2024-05-12 12:52:31,261 INFO L125 PetriNetUnfolderBase]: For 369/369 co-relation queries the response was YES. [2024-05-12 12:52:31,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1327 conditions, 527 events. 155/527 cut-off events. For 369/369 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2551 event pairs, 44 based on Foata normal form. 4/528 useless extension candidates. Maximal degree in co-relation 1299. Up to 162 conditions per place. [2024-05-12 12:52:31,264 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 75 selfloop transitions, 6 changer transitions 4/111 dead transitions. [2024-05-12 12:52:31,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 111 transitions, 606 flow [2024-05-12 12:52:31,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:52:31,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:52:31,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 287 transitions. [2024-05-12 12:52:31,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5189873417721519 [2024-05-12 12:52:31,265 INFO L175 Difference]: Start difference. First operand has 86 places, 75 transitions, 331 flow. Second operand 7 states and 287 transitions. [2024-05-12 12:52:31,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 111 transitions, 606 flow [2024-05-12 12:52:31,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 111 transitions, 596 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-05-12 12:52:31,268 INFO L231 Difference]: Finished difference. Result has 87 places, 74 transitions, 323 flow [2024-05-12 12:52:31,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=323, PETRI_PLACES=87, PETRI_TRANSITIONS=74} [2024-05-12 12:52:31,268 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 17 predicate places. [2024-05-12 12:52:31,269 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 74 transitions, 323 flow [2024-05-12 12:52:31,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.857142857142858) internal successors, (223), 7 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:31,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:31,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:52:31,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 12:52:31,269 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-05-12 12:52:31,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:31,270 INFO L85 PathProgramCache]: Analyzing trace with hash -624184314, now seen corresponding path program 1 times [2024-05-12 12:52:31,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:31,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433923002] [2024-05-12 12:52:31,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:31,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:31,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:31,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:31,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433923002] [2024-05-12 12:52:31,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433923002] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:31,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:31,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 12:52:31,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065924237] [2024-05-12 12:52:31,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:31,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:52:31,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:31,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:52:31,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:52:31,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 79 [2024-05-12 12:52:31,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 74 transitions, 323 flow. Second operand has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:31,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:31,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 79 [2024-05-12 12:52:31,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:31,472 INFO L124 PetriNetUnfolderBase]: 89/384 cut-off events. [2024-05-12 12:52:31,472 INFO L125 PetriNetUnfolderBase]: For 221/221 co-relation queries the response was YES. [2024-05-12 12:52:31,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1002 conditions, 384 events. 89/384 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1643 event pairs, 23 based on Foata normal form. 41/418 useless extension candidates. Maximal degree in co-relation 976. Up to 168 conditions per place. [2024-05-12 12:52:31,474 INFO L140 encePairwiseOnDemand]: 62/79 looper letters, 43 selfloop transitions, 17 changer transitions 3/89 dead transitions. [2024-05-12 12:52:31,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 89 transitions, 509 flow [2024-05-12 12:52:31,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 12:52:31,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 12:52:31,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 182 transitions. [2024-05-12 12:52:31,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5759493670886076 [2024-05-12 12:52:31,476 INFO L175 Difference]: Start difference. First operand has 87 places, 74 transitions, 323 flow. Second operand 4 states and 182 transitions. [2024-05-12 12:52:31,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 89 transitions, 509 flow [2024-05-12 12:52:31,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 89 transitions, 492 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-05-12 12:52:31,478 INFO L231 Difference]: Finished difference. Result has 85 places, 76 transitions, 367 flow [2024-05-12 12:52:31,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=367, PETRI_PLACES=85, PETRI_TRANSITIONS=76} [2024-05-12 12:52:31,480 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 15 predicate places. [2024-05-12 12:52:31,480 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 76 transitions, 367 flow [2024-05-12 12:52:31,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:31,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:31,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:52:31,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 12:52:31,482 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-05-12 12:52:31,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:31,482 INFO L85 PathProgramCache]: Analyzing trace with hash -725390377, now seen corresponding path program 1 times [2024-05-12 12:52:31,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:31,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056955516] [2024-05-12 12:52:31,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:31,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:31,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:31,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:31,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056955516] [2024-05-12 12:52:31,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056955516] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:31,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:31,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 12:52:31,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105571499] [2024-05-12 12:52:31,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:31,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:52:31,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:31,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:52:31,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:52:31,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 79 [2024-05-12 12:52:31,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 367 flow. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:31,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:31,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 79 [2024-05-12 12:52:31,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:31,852 INFO L124 PetriNetUnfolderBase]: 85/352 cut-off events. [2024-05-12 12:52:31,852 INFO L125 PetriNetUnfolderBase]: For 317/317 co-relation queries the response was YES. [2024-05-12 12:52:31,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1023 conditions, 352 events. 85/352 cut-off events. For 317/317 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1476 event pairs, 38 based on Foata normal form. 2/351 useless extension candidates. Maximal degree in co-relation 997. Up to 233 conditions per place. [2024-05-12 12:52:31,854 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 45 selfloop transitions, 4 changer transitions 14/82 dead transitions. [2024-05-12 12:52:31,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 82 transitions, 509 flow [2024-05-12 12:52:31,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 12:52:31,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 12:52:31,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 169 transitions. [2024-05-12 12:52:31,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5348101265822784 [2024-05-12 12:52:31,855 INFO L175 Difference]: Start difference. First operand has 85 places, 76 transitions, 367 flow. Second operand 4 states and 169 transitions. [2024-05-12 12:52:31,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 82 transitions, 509 flow [2024-05-12 12:52:31,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 82 transitions, 493 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 12:52:31,858 INFO L231 Difference]: Finished difference. Result has 83 places, 59 transitions, 268 flow [2024-05-12 12:52:31,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=268, PETRI_PLACES=83, PETRI_TRANSITIONS=59} [2024-05-12 12:52:31,858 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 13 predicate places. [2024-05-12 12:52:31,859 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 59 transitions, 268 flow [2024-05-12 12:52:31,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:31,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:31,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:52:31,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-12 12:52:31,859 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-05-12 12:52:31,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:31,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1730509164, now seen corresponding path program 1 times [2024-05-12 12:52:31,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:31,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369702684] [2024-05-12 12:52:31,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:31,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:32,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:32,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:32,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369702684] [2024-05-12 12:52:32,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369702684] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:32,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:32,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:52:32,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431190142] [2024-05-12 12:52:32,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:32,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:52:32,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:32,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:52:32,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:52:32,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 79 [2024-05-12 12:52:32,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 59 transitions, 268 flow. Second operand has 8 states, 8 states have (on average 33.75) internal successors, (270), 8 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:32,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:32,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 79 [2024-05-12 12:52:32,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:32,210 INFO L124 PetriNetUnfolderBase]: 60/249 cut-off events. [2024-05-12 12:52:32,210 INFO L125 PetriNetUnfolderBase]: For 235/235 co-relation queries the response was YES. [2024-05-12 12:52:32,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 700 conditions, 249 events. 60/249 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 780 event pairs, 20 based on Foata normal form. 13/261 useless extension candidates. Maximal degree in co-relation 674. Up to 105 conditions per place. [2024-05-12 12:52:32,211 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 39 selfloop transitions, 7 changer transitions 2/66 dead transitions. [2024-05-12 12:52:32,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 66 transitions, 399 flow [2024-05-12 12:52:32,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:52:32,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:52:32,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 193 transitions. [2024-05-12 12:52:32,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48860759493670886 [2024-05-12 12:52:32,213 INFO L175 Difference]: Start difference. First operand has 83 places, 59 transitions, 268 flow. Second operand 5 states and 193 transitions. [2024-05-12 12:52:32,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 66 transitions, 399 flow [2024-05-12 12:52:32,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 66 transitions, 349 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-05-12 12:52:32,218 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 226 flow [2024-05-12 12:52:32,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=226, PETRI_PLACES=72, PETRI_TRANSITIONS=56} [2024-05-12 12:52:32,219 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 2 predicate places. [2024-05-12 12:52:32,219 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 226 flow [2024-05-12 12:52:32,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 33.75) internal successors, (270), 8 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:32,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:32,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:52:32,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 12:52:32,220 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-05-12 12:52:32,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:32,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1978270397, now seen corresponding path program 1 times [2024-05-12 12:52:32,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:32,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686504628] [2024-05-12 12:52:32,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:32,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:32,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:32,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:32,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686504628] [2024-05-12 12:52:32,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686504628] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:32,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:32,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 12:52:32,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121740550] [2024-05-12 12:52:32,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:32,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:52:32,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:32,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:52:32,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:52:32,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 79 [2024-05-12 12:52:32,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 56 transitions, 226 flow. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:32,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:32,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 79 [2024-05-12 12:52:32,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:32,431 INFO L124 PetriNetUnfolderBase]: 67/245 cut-off events. [2024-05-12 12:52:32,431 INFO L125 PetriNetUnfolderBase]: For 216/216 co-relation queries the response was YES. [2024-05-12 12:52:32,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 672 conditions, 245 events. 67/245 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 753 event pairs, 46 based on Foata normal form. 4/248 useless extension candidates. Maximal degree in co-relation 648. Up to 158 conditions per place. [2024-05-12 12:52:32,432 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 0 selfloop transitions, 0 changer transitions 64/64 dead transitions. [2024-05-12 12:52:32,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 64 transitions, 370 flow [2024-05-12 12:52:32,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:52:32,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:52:32,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 179 transitions. [2024-05-12 12:52:32,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37763713080168776 [2024-05-12 12:52:32,433 INFO L175 Difference]: Start difference. First operand has 72 places, 56 transitions, 226 flow. Second operand 6 states and 179 transitions. [2024-05-12 12:52:32,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 64 transitions, 370 flow [2024-05-12 12:52:32,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 64 transitions, 354 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-05-12 12:52:32,434 INFO L231 Difference]: Finished difference. Result has 71 places, 0 transitions, 0 flow [2024-05-12 12:52:32,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=71, PETRI_TRANSITIONS=0} [2024-05-12 12:52:32,435 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 1 predicate places. [2024-05-12 12:52:32,435 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 0 transitions, 0 flow [2024-05-12 12:52:32,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:32,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-05-12 12:52:32,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2024-05-12 12:52:32,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2024-05-12 12:52:32,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2024-05-12 12:52:32,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-05-12 12:52:32,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-05-12 12:52:32,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-05-12 12:52:32,439 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:52:32,441 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-05-12 12:52:32,441 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-05-12 12:52:32,444 INFO L507 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-05-12 12:52:32,444 INFO L508 ceAbstractionStarter]: WitnessConsidered=1 [2024-05-12 12:52:32,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.05 12:52:32 BasicIcfg [2024-05-12 12:52:32,445 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-05-12 12:52:32,446 INFO L158 Benchmark]: Toolchain (without parser) took 5078.83ms. Allocated memory was 127.9MB in the beginning and 247.5MB in the end (delta: 119.5MB). Free memory was 69.4MB in the beginning and 184.2MB in the end (delta: -114.8MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2024-05-12 12:52:32,446 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 127.9MB. Free memory is still 99.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 12:52:32,446 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 127.9MB. Free memory is still 94.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 12:52:32,446 INFO L158 Benchmark]: CACSL2BoogieTranslator took 497.85ms. Allocated memory was 127.9MB in the beginning and 188.7MB in the end (delta: 60.8MB). Free memory was 69.4MB in the beginning and 143.4MB in the end (delta: -74.0MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2024-05-12 12:52:32,446 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.53ms. Allocated memory is still 188.7MB. Free memory was 143.4MB in the beginning and 141.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 12:52:32,446 INFO L158 Benchmark]: Boogie Preprocessor took 34.89ms. Allocated memory is still 188.7MB. Free memory was 141.5MB in the beginning and 139.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 12:52:32,446 INFO L158 Benchmark]: RCFGBuilder took 526.31ms. Allocated memory is still 188.7MB. Free memory was 138.3MB in the beginning and 95.3MB in the end (delta: 43.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2024-05-12 12:52:32,447 INFO L158 Benchmark]: TraceAbstraction took 3982.21ms. Allocated memory was 188.7MB in the beginning and 247.5MB in the end (delta: 58.7MB). Free memory was 95.3MB in the beginning and 184.2MB in the end (delta: -88.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 12:52:32,448 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.14ms. Allocated memory is still 127.9MB. Free memory is still 99.5MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.12ms. Allocated memory is still 127.9MB. Free memory is still 94.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 497.85ms. Allocated memory was 127.9MB in the beginning and 188.7MB in the end (delta: 60.8MB). Free memory was 69.4MB in the beginning and 143.4MB in the end (delta: -74.0MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.53ms. Allocated memory is still 188.7MB. Free memory was 143.4MB in the beginning and 141.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.89ms. Allocated memory is still 188.7MB. Free memory was 141.5MB in the beginning and 139.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 526.31ms. Allocated memory is still 188.7MB. Free memory was 138.3MB in the beginning and 95.3MB in the end (delta: 43.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * TraceAbstraction took 3982.21ms. Allocated memory was 188.7MB in the beginning and 247.5MB in the end (delta: 58.7MB). Free memory was 95.3MB in the beginning and 184.2MB in the end (delta: -88.9MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 707]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 103 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.9s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 713 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 644 mSDsluCounter, 110 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 69 mSDsCounter, 115 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1803 IncrementalHoareTripleChecker+Invalid, 1918 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 115 mSolverCounterUnsat, 41 mSDtfsCounter, 1803 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=367occurred in iteration=10, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 334 NumberOfCodeBlocks, 334 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 321 ConstructedInterpolants, 0 QuantifiedInterpolants, 2095 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-05-12 12:52:32,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE